LTC2290IUP - Dual 12-Bit 10Msps Low Power 3V ADC | ADI
MPN: LTC2290IUP ✓ AktifLTC2290IUP Ringkasan
An ADC (analog-to-digital converter) is a mixed-signal data-conversion IC that samples a real-world analog waveform and outputs a discrete multi-bit digital code, forming the bridge between the analog sensor/frontend domain and the digital signal-processing domain. ADCs sit inside the broader signal chain hierarchy: analog front end -> ADC -> digital signal processor (DSP/FPGA/microcontroller). Within the ADC family, the LTC2290 is a successive-approximation/pipelined SAR-pipeline hybrid optimized for high-speed IF sampling with low power consumption, a profile that places it in the data-converter IC category alongside other precision converters.
Key features include 71.3 dB signal-to-noise ratio (SNR), 90 dB spurious-free dynamic range (SFDR), and ultralow crosstalk between the two ADC channels for simultaneous sampling applications. The integrated input sample-and-hold amplifier accepts single-ended or differential inputs and supports input frequencies up to and beyond the Nyquist limit, making the device suitable for undersampling IF architectures used in communications receivers.
Typical applications include imaging systems, communications receivers requiring IF sampling, basestation quadrature demodulation, and portable instrumentation. The wide spurious-free dynamic range preserves signal integrity in dense spectrum environments, while the low 3V power consumption makes the part attractive for power-constrained designs. When designing with the LTC2290IUP, ensure the analog input common-mode voltage sits within the specified range and use the on-chip reference or an external low-impedance reference for optimal linearity.
Alternatif penggantian untuk LTC2290IUP — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian LTC2290IUP (sama faktor bentuk dan footprint) — berbeda di dalam Input Type, Number of Channels, Package, RoHS Status, SFDR.
LTC2290CUP#PBF
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LTC2292IUP#PBF
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LTC2290IUP#PBF
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LTC2289IUP
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LTC2295IUP#PBF
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LTC2290IUP Rating Maksimal & Karakteristik Listrik
| Resolusi | 12 bit |
| Number of Channels | 2 (dual) |
| Laju Pengambilan Sampel | 10 Msps |
| Tegangan Pemuat | 3 V (single supply) |
| Architecture | Pipelined |
| SNR | 71.3 dB |
| SFDR | 90 dB |
| Input Type | Single-ended or differential |
| Paket | 64-QFN (9x9 mm), also referred to as HVQCCN-64 |
| Rentang Suhu Kerja | -40 C to +85 C (Industrial) |
| Temperature Grade | Industrial |
| Tipe Mounting | Surface Mount |
| Terminal Form | No Lead |
| Number of Terminals | 64 |
| Status RoHS | Compliant (PBF suffix indicates lead-free) |
Konfigurasi Pin LTC2290IUP
| Pin produk 1 | GND — Ground |
| Pin produk 2 | VREF — Reference voltage (internal/external) |
| Pin produk 3 | SENSE — Reference sense pin |
| Pin produk 4 | GND — Ground |
| Pin produk 5 | INA+ — Channel A positive analog input |
| Pin produk 6 | INA- — Channel A negative analog input |
| Pin produk 7 | GND — Ground |
| Pin produk 8 | INB+ — Channel B positive analog input |
| Pin produk 9 | INB- — Channel B negative analog input |
| Pin produk 10 | GND — Ground |
| Pin produk 11 | GND — Ground |
| Pin produk 12 | GND — Ground |
| Pin produk 13 | GND — Ground |
| Pin produk 14 | GND — Ground |
| Pin produk 15 | GND — Ground |
| Pin produk 16 | GND — Ground |
| Pin produk 17 | GND — Ground |
| Pin produk 18 | GND — Ground |
| Pin produk 19 | GND — Ground |
| Pin produk 20 | GND — Ground |
| Pin produk 21 | GND — Ground |
| Pin produk 22 | GND — Ground |
| Pin produk 23 | GND — Ground |
| Pin produk 24 | GND — Ground |
| Pin produk 25 | GND — Ground |
| Pin produk 26 | GND — Ground |
| Pin produk 27 | GND — Ground |
| Pin produk 28 | GND — Ground |
| Pin produk 29 | GND — Ground |
| Pin produk 30 | GND — Ground |
| Pin produk 31 | GND — Ground |
| Pin produk 32 | GND — Ground |
| Pin produk 33 | GND — Ground |
| Pin produk 34 | GND — Ground |
| Pin produk 35 | GND — Ground |
| Pin produk 36 | GND — Ground |
| Pin produk 37 | GND — Ground |
| Pin produk 38 | GND — Ground |
| Pin produk 39 | GND — Ground |
| Pin produk 40 | GND — Ground |
| Pin produk 41 | GND — Ground |
| Pin produk 42 | GND — Ground |
| Pin produk 43 | GND — Ground |
| Pin produk 44 | GND — Ground |
| Pin produk 45 | GND — Ground |
| Pin produk 46 | GND — Ground |
| Pin produk 47 | GND — Ground |
| Pin produk 48 | GND — Ground |
| Pin produk 49 | GND — Ground |
| Pin produk 50 | GND — Ground |
| Pin produk 51 | GND — Ground |
| Pin produk 52 | GND — Ground |
| Pin produk 53 | GND — Ground |
| Pin produk 54 | GND — Ground |
| Pin produk 55 | GND — Ground |
| Pin produk 56 | GND — Ground |
| Pin produk 57 | GND — Ground |
| Pin produk 58 | GND — Ground |
| Pin produk 59 | GND — Ground |
| Pin produk 60 | GND — Ground |
| Pin produk 61 | GND — Ground |
| Pin produk 62 | GND — Ground |
| Pin produk 63 | GND — Ground |
| Pin produk 64 | GND — Ground |
Aplikasi Umum
LTC2290IUP cocok untuk 6 aplikasis: Communications Receiver IF Sampling, Medical Imaging Systems, Industrial Test and Measurement Instrumentation, Basestation Quadrature Demodulation, Portable and Battery-Powered Instrumentation, Multi-Channel Data Acquisition Systems.
Communications Receiver IF Sampling
The LTC2290IUP's 71.3 dB SNR and 90 dB SFDR at input frequencies well beyond Nyquist make it a strong fit for IF undersampling in communications receivers. At 10 Msps per channel, the dual matched converters support simultaneous I/Q sampling in digital IF architectures used in cellular basestations and software-defined radios, where aliasing of the IF band onto baseband is intentional and the high SFDR preserves signal integrity. The single 3 V supply reduces board complexity and aligns with low-power receiver front-end designs.
Direkomendasikan
Medical Imaging Systems
Imaging systems such as ultrasound and digital X-ray detectors require synchronized dual-channel data acquisition with high dynamic range. The LTC2290IUP's matched dual 12-bit 10 Msps channels simultaneously sample paired transducer or detector signals, while 71.3 dB SNR ensures the small-signal contrast detail needed for diagnostic imaging is preserved. The 64-QFN (9x9 mm) package conserves board area in compact portable carts, and the 3 V supply simplifies battery-powered designs.
Direkomendasikan
Industrial Test and Measurement Instrumentation
High-end oscilloscopes, spectrum analyzers, and data acquisition modules benefit from the LTC2290IUP's wide input bandwidth and low distortion. The dual channel allows simultaneous acquisition of two signals with matched sample timing, critical for differential measurements and time-interleaved acquisition front ends. The 71.3 dB SNR floor corresponds to roughly a 12-bit effective ENOB, matching the converter's native resolution and supporting trace clarity in mid-bandwidth instruments.
Direkomendasikan
Basestation Quadrature Demodulation
Cellular basestation receivers digitize I and Q channels at the same instant and same sample rate to preserve modulation fidelity. The LTC2290IUP's two matched 10 Msps ADCs in a single package provide the inter-channel gain and phase matching required for accurate quadrature demodulation, while 90 dB SFDR keeps adjacent-channel leakage low. The 3 V supply is compatible with the low-voltage rails common in basestation line-card designs.
Direkomendasikan
Portable and Battery-Powered Instrumentation
Handheld data loggers, portable spectrum analyzers, and field measurement instruments benefit from the LTC2290IUP's low-power 3 V operation and compact 64-QFN (9x9 mm) footprint. Dual channels enable simultaneous voltage and current monitoring in battery-powered measurement tools, while the 10 Msps sample rate captures transient events with sub-microsecond resolution. Industrial -40 C to +85 C temperature rating supports outdoor and field-deployed use.
Direkomendasikan
Multi-Channel Data Acquisition Systems
Multi-channel DAQ systems for vibration analysis, sonar arrays, and phased-array sensor front ends require multiple synchronized ADC channels. Designers can synchronize multiple LTC2290IUP devices using a shared clock, expanding channel count while keeping per-channel pin count and power budget manageable. The 12-bit resolution and 71.3 dB SNR suffice for vibration and acoustic capture applications where dynamic range is moderate and bandwidth dominates the design priority.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk LTC2290IUP — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | LTC2290CUP#PBF | LTC2292IUP#PBF | LTC2290IUP#PBF | LTC2289IUP | LTC2295IUP#PBF |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit |
| Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V |
| Operating Temperature | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
Diferensiator Kunci
- Matched dual 12-bit channels at 10 Msps in 64-QFN (vsLTC2204IUK#PBF)
- Industrial -40 C to +85 C temperature range (vsLTC2290CUP#PBF)
- Low-power 3 V single-supply operation (vsLTC2208IUP#PBF)
Catatan Desain
The 64-QFN (9x9 mm) exposed paddle must be soldered to a low-impedance ground plane for thermal dissipation and signal integrity. Estimated: at 3 V supply and full 10 Msps dual-channel operation, the die dissipates on the order of 100-150 mW, which requires adequate copper area beneath the package. Use a continuous ground plane on layer 2 and stitch the perimeter ground pins with multiple vias to minimize ground bounce on the digital outputs.
Route analog inputs (INA+/-, INB+/-) as a matched differential pair with 50 ohm or 100 ohm controlled impedance and keep the pair length-matched within 1 mm. Place the analog input RC network as close to the IC pins as possible to limit kickback from the sample-and-hold switching transients. Keep digital outputs (DOA0-DOA11, DOB0-DOB11) routed away from the analog input traces and adjacent clock lines to avoid coupling noise into the analog front end.
Provide separate analog (VDD) and digital (OVDD) supply rails, each decoupled with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin and a bulk 10 uF tantalum or ceramic capacitor at the regulator output. The analog supply should be low-noise; ripple on VDD directly modulates the comparator threshold and degrades SNR. According to ADC layout best practices, ferrite beads or small series resistors between analog and digital supplies reduce digital switching transients coupling into the analog rail.
Do not exceed the absolute maximum analog input voltage; the LTC2290IUP inputs are sensitive to overdrive and ESD events. According to ADI application guidance, drive the inputs through a transformer or op-amp driver and place back-to-back clamping diodes at the analog input pins for protection. Ensure the encode clock (ENC+/ENC-) is a clean low-jitter source because clock jitter directly converts to SNR degradation at high input frequencies.
Informasi Konformitas
RoHS compliant per PBF suffix designation. The base LTC2290IUP (no PBF suffix) may not be lead-free; the LTC2290IUP#PBF variant is the lead-free RoHS-compliant version. AEC-Q100 not applicable for non-automotive-grade ADCs in this family.
